Cov txheej txheem:
Video: Yuav ua li cas koj paub tus naj npawb ntawm protons hauv ib lub atom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tus naj npawb ntawm protons, neutrons, thiab electrons hauv atom tuaj yeem txiav txim siab los ntawm cov txheej txheem yooj yim
- Cov tus naj npawb ntawm protons nyob rau hauv lub nucleus ntawm lub atom yog sib npaug rau cov tus lej atomic (Z).
- Cov tus lej ntawm electrons nyob rau hauv ib tug nruab nrab atom yog sib npaug rau cov tus naj npawb ntawm protons .
Tsis tas li ntawd, koj yuav nrhiav tau cov neutrons li cas?
Nco ntsoov tias lub nucleus ntawm ib lub atom yog tsim los ntawm protons thiab neutrons . Thiab cov tus lej ntawm cov khoom uas muaj nyob rau hauv lub nucleus yog hu ua loj tus lej (tseem hu ua atomic mass). Yog li, los txiav txim qhov tus naj npawb ntawm neutrons Hauv atom, peb tsuas yog yuav tsum tau rho tawm tus naj npawb ntawm protons los ntawm pawg tus lej.
Tsis tas li ntawd, tus lej atomic ntawm ib lub atom yog dab tsi? Glossary. Cov tus lej atomic yog sib npaug rau cov tus lej ntawm protons nyob rau hauv ib atom cov nucleus. Cov tus lej atomic txiav txim qhov twg keeb ib atom yog. Piv txwv li, ib qho atom uas muaj raws nraim 47 protons hauv nws cov nucleus yog ib qho atom ntawm nyiaj.
Ua raws li qhov no hauv kev xav, dab tsi tuaj yeem paub tus naj npawb ntawm protons tso cai rau koj ua?
Atoms ntawm txhua lub caij muaj cov yam ntxwv tus naj npawb ntawm protons . Qhov tseeb, cov tus naj npawb ntawm protons txiav txim siab dab tsi atom peb tab tom saib (piv txwv li, tag nrho cov atoms nrog rau protons yog carbon atoms); tus tus naj npawb ntawm protons nyob rau hauv ib qho atom hu ua atomic tus lej . Nyob rau hauv sib piv, lub tus naj npawb ntawm neutrons rau ib lub ntsiab ua tau txawv.
Yuav ua li cas koj nrhiav tau tag nrho cov electrons?
Multiply lub ntsiab lub atomic tus lej los ntawm tus lej ntawm atoms ntawm hom no (saib Kauj Ruam 1) hauv cov molecule. Rov ua dua rau tag nrho cov ntsiab lus hauv molecule, tom qab ntawd ntxiv tag nrho cov khoom rau xam tus tus naj npawb ntawm electrons . Hauv thawj qhov piv txwv, tus tus naj npawb ntawm electrons hauv KNO3 sib npaug (19 x 1) + (7 x 1) + (8 x 3) = 50.
Pom zoo:
Yuav ua li cas kuv thiaj paub tus naj npawb ntawm electrons hauv ib lub caij?
Qhov yooj yim tshaj plaws los nrhiav tus naj npawb ntawm protons, neutrons, thiab electrons rau ib lub caij yog saib lub caij atomic naj npawb ntawm lub sij hawm. Tus lej ntawd yog sib npaug rau tus lej ntawm cov protons. Tus naj npawb ntawm protons yog sib npaug rau cov xov tooj ntawm electrons, tshwj tsis yog tias muaj ib qho ion superscript teev tom qab lub caij
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm molecules nyob rau hauv ib tug tshuaj formula?
Multiply Moles los ntawm Avogadro Constant Muab cov naj npawb ntawm moles los ntawm Avogadro tas li, 6.022 x 10^23, los xam cov lej ntawm cov molecules hauv koj cov qauv
Yuav ua li cas koj nrhiav tau tus naj npawb ntawm electrons nyob rau hauv ib tug uncharged atom?
Tus naj npawb atomic sawv cev rau tus naj npawb ntawm protons hauv atom lub nucleus. Hauv ib qho atom uas tsis tau them nyiaj, tus naj npawb ntawm cov protons ib txwm sib npaug ntawm cov electrons. Piv txwv li, carbon atoms suav nrog rau protons thiab rau electrons, yog li cov pa roj carbon monoxide yog 6
Koj tuaj yeem suav tus naj npawb ntawm neutrons hauv ib lub atom li cas?
Qhov no txhais tau tias nrhiav tus naj npawb ntawm neutrons koj rho tus naj npawb ntawm protons los ntawm tus lej loj. Nyob rau hauv lub sij hawm ntawm lub sij hawm, tus naj npawb atomic yog tus naj npawb ntawm protons, thiab cov atomic mass yog tus lej loj
Dab tsi yog tus naj npawb ntawm protons hauv atom ntawm silicon nrog cov lej loj tshaj plaws?
Piv txwv li, silicon muaj 14 protons thiab 14 neutrons. Nws atomic tooj yog 14 thiab nws atomic mass yog 28. Qhov feem ntau isotope ntawm uranium muaj 92 protons thiab 146 neutrons. Nws atomic tooj yog 92 thiab nws atomic mass yog 238 (92 + 146). 2.1 Electrons, Protons, Neutrons, thiab Atoms. Element Iron Symbol Fe Number of Electrons in Txhua Plhaub Thawj 2 Thib Ob 8 Peb 14